Should I buy Sejuani?

As the title suggests, I'm wondering if I should buy her. I like her design as a champion and think that she's pretty cool but given that very few players pick her I thought she wasn't that rewarding. Now that she's becoming popular all of a sudden thanks to Cinderhulk Enchantment, I wonder if she's worth to learn. I know she got a little nerf on the PBE but that doesn't worry me much. So should I buy her? Any Sejuani players out there are welcome to give their input.
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